The irrational feeling induced by alcohol after a heavy session. The feeling of regret and self hatred due to hangover. Waking and at first feeling indifferent about the events of the night before but then, over a period of several hours, your memory coming back in small amounts of ever growing embarassment for yourself and the way acted or what you said to, probably, the wrong person.

"Oh my God I am such an idiot I made such an arse of myself last night, I hate myself". Freinds response "Dont' be stupid you were fine. I was the one being stupid!". Your response "No you were great you just have beer fear, I was the idiot!"..........etc etc etc...............